A distributed databasethat is used to maintain a continuously growing list of records, called blocks. Each block contains a timestampand a link to a previous block.
A blockchain is typically managed by a _____?___ network collectively adhering to a protocol for validating new blocks.
peer-to-peer
By design, blockchains are inherently resistant to ____?____ .
A.
A blockchain facilitates secure online __?__
D.
A blockchain is a ___?____ and ____?___ that is used to record transactions across many computers so that the record cannot be altered retroactively without the alteration of all subsequent blocks and the collusion of the network.
D.
Decentralizedblockchains may use ___?___ and ___?___.
D.
Distributed networking (def'n)
a network system, is described as this when the computer programming and the datato be worked on are spread outacross more than one computer.
Hard fork (def'n)
This type of term refers to a situation when a blockchain splits into two separate chains in consequence of the use oftwo distinct sets of rulestrying to govern the system.
Smart contracts (def'n)
These are contractsthat can be partiallyor fully executed or enforcedwithouthumaninteraction.
Cryptocurrency (def'n)
A digital asset designed to work as a medium of exchange using cryptographyto secure the transactions and to control the creation ofadditional unitsof the currency.
Mining (def'n)
is a record-keeping service.Minerskeep the blockchain consistent, complete, and unalterable by repeatedly verifying and collecting newly broadcast transactions into a new group of transactions called a block.
In order to be accepted by the rest of the network, a new block must contain a so-called ___?___.
A.
Proof-of-work (def'n)
This is an economic measure to deter denial of service attacks and other service abuses such as spam on a network by requiring some work from the service requester, usually meaning processing time by a computer.
Give an example of proof-of-work
partial hash inversions to provethat work was done, as a good-will token to send an e-mail.
There are two classes of proof-of-work protocols...What are their names?
Challenge-response
Solution-verification
Solution-verification proof-of-work (def'n)
This proof-of-work class has nodirect interactive link; the problem must be self-imposedbefore a solution is sought by the requester, and the provider must check both the problem choice and the found solution.
Challenge-response proof-of-work (def'n)
This proof-of-work class assume a direct interactive link between the requester (client) and the provider (server). The provider chooses a challenge, say an item in a set with a property, the requester finds the relevant response in the set, which is sent back and checkedby the provider.
Author
geschw66
ID
332577
Card Set
Blockchain II
Description
More block chain terms, some the same with slightly different definitions than the first set of cards. Source for this set of cards was Wikipedia.
